NKO Atomic Clock

Current time in milliseconds unit, dday remaining time calculator, elapsed time, stopwatch, server time checker

☞ Install NKO Atomic Clock(Android app) at Google Playstore
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http://yeyak.seoul.go.kr server time check history

  • 2018-08-07 08:38:57 KST -0.008367
  • 2018-01-21 05:11:54 KST -0.045958
  • 2017-07-29 10:43:30 KST -0.043297
  • 2017-07-18 08:58:29 KST -0.044491
  • 2017-01-02 08:54:38 KST -0.058999
  • 2016-06-03 08:38:44 KST -0.002393
  • 2016-06-02 08:50:22 KST -0.008842
  • 2016-06-02 08:40:24 KST 0.000032
  • 2015-07-27 12:58:14 KST -0.041313
  • 2015-07-27 12:57:04 KST -0.013257
  • Average -0.0266885

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We fetch a server clock and let you see

Webservers transmit their time in seconds unit, so without special treatment, the maximum error would be as big as 1 second. NKO Atomic Clock calculates a server time more than ten times in 1 second and seize the moment when the second changes. Thus we can minimize the calculation error as small as 0.1 second. Moreover, delays between our server and a destination server are considered so the accuracy of time increases.

NKO supports the HTTPS protocol and subdomains

Some servers use different servers over protocols or subdomains. You can get a desired result by specifying more details.


# You need to tell us an exact server address. For example, some sites host differently by whether the address begin with WWW or not.

# Even if your computer clock isn't synchronized, NKO always will display correct time.

# If you click a numeric time error in the history view, the clock will use that measurement.

# The results can have quite much error if the destination server is under load balancing. Please refer to a variance in the server time history information.

# A particular service uses its own time clock, different with web servers' clock. in this case, server time guessing is not meaningful.